Tiger nuts (Cyperus esculentus), known locally in West Africa as earth almonds, are small tubers prized for their naturally sweet, nutty flavour and extraordinary nutritional density. Stone Trade Networks sources exclusively from verified smallholder farms across Nigeria's northern agricultural belt, where the soil composition and dry-season growing conditions produce tiger nuts of exceptional sweetness and starch content. Each harvest is evaluated for moisture, sugar level, and physical uniformity before a single bag enters our processing facility.

Hibiscus sabdariffa — called zobo in Nigeria and bissap across West Africa — produces deep crimson calyces that are among the most commercially sought botanical ingredients on the global market. Stone Trade Networks partners directly with farmer cooperatives in Kano, Jigawa, and Sokoto states, where the semi-arid climate yields hibiscus with the highest anthocyanin concentrations. We process and package the calyces immediately after harvest to lock in colour intensity and prevent oxidative degradation.

Turmeric (Curcuma longa) has transcended its traditional role as a kitchen spice to become one of the fastest-growing natural ingredients in the global wellness, food, and pharmaceutical industries. Stone Trade Networks sources whole turmeric rhizomes from farms in Kaduna and Nassarawa states where the tropical climate and laterite soil produce roots with notably high curcuminoid content. Our processing line transforms fresh rhizomes into dried slices, powder, or whole fingers within hours of harvest to maximise bioactive retention.

Nigerian ginger (Zingiber officinale) is globally recognised as among the finest in the world, prized for its exceptionally high gingerol content, intense aroma, and sharp pungency that surpass varieties grown in many competing origins. Stone Trade Networks sources exclusively from Kaduna state — Nigeria's primary ginger-growing region — where the volcanic highland soils and altitude deliver a root with concentrated volatile oils and a bold flavour profile that commands premium pricing in international spice markets.

Bitter kola (Garcinia kola) is a tropical seed native to the humid forests of West and Central Africa, revered for millennia for its cultural significance and remarkable bioactive properties. Stone Trade Networks sources Garcinia kola seeds from verified collectors in Edo, Cross River, and Delta states — the ecological heartland of bitter kola production in Nigeria. Our handling protocols preserve the integrity of the delicate seed, preventing premature fermentation or mould growth that can compromise quality during transit from forest floor to export warehouse.